PROTOTYPE #4a

This prototype is based on the system of benchmark #11. It's a good system to attach to a wheelchair because it's compact and quite lightweighted. Because the wheelchair works on 12 V, we used the same motors to build this system. That's because we connect and use the batteries of the wheelchair to launch the ball.

The wheels are made of wood (diam. 35mm). The distance between the wheels is the size of a tennisball (6.7 cm).

Because the tape came loose, we didn't manage to launch a ball with it yet. 

CONCLUSION

Expected positive feedback:
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Unexpected positive feedback:
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Expected negative feedback:
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Unexpected negative feedback:
The tape comes loose.

Makeability score: 2